package com.qfjy.project.weixin.api.sample;

import com.alibaba.fastjson2.JSON;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.qfjy.project.weixin.api.sample.bean.BackInfo;
import com.qfjy.project.weixin.api.sample.bean.Sample;
import lombok.extern.slf4j.Slf4j;
import okhttp3.*;
import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.stereotype.Service;

import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Base64;
import java.net.URLEncoder;
import java.io.*;
@Service
@Slf4j
public class SampleUtil {



    public static final String API_KEY = "dkXg8YM3L8TGoINoGaT9MpeY";
    public static final String SECRET_KEY = "E55n7bW8uw4KEn2tnGpLfSdbF5Hm1dVz";
    static final OkHttpClient HTTP_CLIENT = new OkHttpClient().newBuilder().build();

    public BackInfo getBackText(String url) throws IOException{
        MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
        // image 可以通过 getFileContentAsBase64("C:\fakepath\微信图片_20231107064958.png") 方法获取,如果Content-Type是application/x-www-form-urlencoded时,第二个参数传true
        RequestBody body = RequestBody.create(mediaType, "url="+url+"&detect_direction=false&detect_language=false&paragraph=false&probability=false");
        Request request = new Request.Builder()
                .url("https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic?access_token=" + getAccessToken())
                .method("POST", body)
                .addHeader("Content-Type", "application/x-www-form-urlencoded")
                .addHeader("Accept", "application/json")
                .build();
        Response response = HTTP_CLIENT.newCall(request).execute();

        // 使用ObjectMapper将JSON字符串转换为Java对象
        ObjectMapper objectMapper = new ObjectMapper();
        BackInfo backInfo = objectMapper.readValue(response.body().string(), BackInfo.class);
        return backInfo;
    }

    /**
     * 获取文件base64编码
     *
     * @param path      文件路径
     * @param urlEncode 如果Content-Type是application/x-www-form-urlencoded时,传true
     * @return base64编码信息，不带文件头
     * @throws IOException IO异常
     */
    static String getFileContentAsBase64(String path, boolean urlEncode) throws IOException {
        byte[] b = Files.readAllBytes(Paths.get(path));
        String base64 = Base64.getEncoder().encodeToString(b);
        if (urlEncode) {
            base64 = URLEncoder.encode(base64, "utf-8");
        }
        return base64;
    }


    /**
     * 从用户的AK，SK生成鉴权签名（Access Token）
     *
     * @return 鉴权签名（Access Token）
     * @throws IOException IO异常
     */
    static String getAccessToken() throws IOException {
        try {
        MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
        RequestBody body = RequestBody.create(mediaType, "grant_type=client_credentials&client_id=" + API_KEY
                + "&client_secret=" + SECRET_KEY);
        Request request = new Request.Builder()
                .url("https://aip.baidubce.com/oauth/2.0/token")
                .method("POST", body)
                .addHeader("Content-Type", "application/x-www-form-urlencoded")
                .build();
        Response response = HTTP_CLIENT.newCall(request).execute();
            return new JSONObject(response.body().string()).getString("access_token");
        } catch (JSONException e) {
            throw new RuntimeException(e);
        }
    }
}
